Question

Tinh nhanh

1/2 +3/5 + 1/9 + 1/127 + 7/ 18 + 4/35+ 2/7

ai dung minh tick cho nhe . Minh can gap nhe 

Answer 1

1/2+3/5+1/9+1/127+7/18+4/35+2/7

=(1/2+1/9)+(3/5+2/7)+1/127+7/18+4/35

=11/18+31/35+1/127+7/18+4/35

=(11/18+7/18)+(31/35+4/35)+1/127

=1+1+1/127

=2+1/127

=2\(\frac{1}{127}\)

=

Answer 2

Minh ngoc oi minh giu nguyen ket qua la hon so a